code: def test_cov_params(self):
      # skip until I have test with zero-inflated data
      # use bsejac for now since it seems to work
      assert_almost_equal(
          self.res.bsejac[:-1], self.res_glm.bse[1:], self.decimal - 2
      )
      assert_almost_equal(
          self.res.bsejac[:-1], self.res_discrete.bse, self.decimal - 2
      )
  
imports: import pytest
  import numpy
  from numpy.testing import assert_almost_equal
  from scipy import stats
  import statsmodels.api
  from statsmodels.miscmodels.count import PoissonGMLE, PoissonOffsetGMLE, PoissonZiGMLE
  from statsmodels.discrete.discrete_model import Poisson
  from statsmodels.tools.sm_exceptions import ValueWarning
label_desc: Use image node_id 3 for calling the TestPoissonZi obj's underlying member method code with example usage: obj.test_cov_params() without return types